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Math

1183 min11part Calculus course47 CQ
Need some tips for Calculus 1A? Or maybe you’re madly reviewing for tomorrow's math test? Either way, never fear  Krista, an experienced math tutor, will help you understand the world of calculus, stepbystep. Start by learning the difference between a function and an equation  and how to analyze a function's graph for continuity and limits. Then, step into the world of tangent lines, differentiation, and more. Each lesson includes examples and sample problems to help you along the way.
with Krista King MathNeed some tips for Calculus 1A? Or maybe you’re madly reviewing for tomorrow's math test? Either way, never fear  Krista, an experienced math tutor, will help you understand the world of calculus, stepbystep. Start by learning the difference between a function and an equation  and how to analyze a function's graph for continuity and limits. Then, step into the world of tangent lines, differentiation, and more. Each lesson includes examples and sample problems to help you along the way.

10129 min10part Math course70 CQ
Statistics may sound like a dry topic, but developing data analysis skills will unlock fascinating worlds! In this 10lesson course from statistics teacher Zac Rappell, start by understanding group data and central tendencies (mean, median, and mode), then explore measures of spread (range, IQR, and standard deviation). Learn how to create stem and leaf and box and whisker plots, and practice comparing data sets to identify new relationships. Finish with a fun final project analyzing the Oscars!
with Zachary RappellStatistics may sound like a dry topic, but developing data analysis skills will unlock fascinating worlds! In this 10lesson course from statistics teacher Zac Rappell, start by understanding group data and central tendencies (mean, median, and mode), then explore measures of spread (range, IQR, and standard deviation). Learn how to create stem and leaf and box and whisker plots, and practice comparing data sets to identify new relationships. Finish with a fun final project analyzing the Oscars!

31113 min31part Algebra course73 CQ
Studying for the Regents Exam and need help with the algebra one section? In this course, run through thirtyseven example problems that cover basic algebra concepts you'll need to know to pass.
with Math FortressStudying for the Regents Exam and need help with the algebra one section? In this course, run through thirtyseven example problems that cover basic algebra concepts you'll need to know to pass.

993 min9part Calculus course51 CQ
Calculus students ready to advance to the next level: this course is for you. Learn all about the cross product, starting with the right hand rule, and ending with how to measure torque.
with Math FortressCalculus students ready to advance to the next level: this course is for you. Learn all about the cross product, starting with the right hand rule, and ending with how to measure torque.

934 min9part Math course22 CQ
In elementary math education in second, third, and fourth grade, place value is fundamental, but some kids just don't seem to get it. In this course, get great tips on teaching place value to kids.
with Tom ScherstenIn elementary math education in second, third, and fourth grade, place value is fundamental, but some kids just don't seem to get it. In this course, get great tips on teaching place value to kids.

12109 min12part Calculus course62 CQ
In this calculus course discover the geometric interpretation of the dot product (also known as the scalar product), the component definition of the dot product, and properties of the dot product.
with Math FortressIn this calculus course discover the geometric interpretation of the dot product (also known as the scalar product), the component definition of the dot product, and properties of the dot product.

10119 min10part Algebra course66 CQ
Does solving for x make your head spin? Math teacher Eric Buffington explains the simple steps to finding x, from onestep addition problems to equations with x on both sides of the equals sign.
with Eric BuffingtonDoes solving for x make your head spin? Math teacher Eric Buffington explains the simple steps to finding x, from onestep addition problems to equations with x on both sides of the equals sign.

11120 min11part Math course66 CQ
Polynomials are essential for algebra! From learning what a polynomial is to completing polynomial operations, this Algebra 1 course covers the basics with clear examples for maximum learning.
with Eric BuffingtonPolynomials are essential for algebra! From learning what a polynomial is to completing polynomial operations, this Algebra 1 course covers the basics with clear examples for maximum learning.

26262 min26part Calculus course145 CQ
Ready to pursue more complex calculus topics? Challenge your visualization skills in this math course by covering fundamentals of the threedimensional coordinate system and vectors.
with Math FortressReady to pursue more complex calculus topics? Challenge your visualization skills in this math course by covering fundamentals of the threedimensional coordinate system and vectors.

9 minGeometry lesson5 CQ
Learn how to identify midpoints, bisectors of segments, trisection points, trisectors of segments, adjacent angles, angle bisectors, and angle trisectors.
with Math FortressLearn how to identify midpoints, bisectors of segments, trisection points, trisectors of segments, adjacent angles, angle bisectors, and angle trisectors.

8 minFREEMath lessonFree5 CQ
This lesson from Vegas Aces explains how to use basic math to predict the likelihood of winning, with help from fellow Curious teacher Professor Dave.
with Vegas AcesThis lesson from Vegas Aces explains how to use basic math to predict the likelihood of winning, with help from fellow Curious teacher Professor Dave.

16 minFREEMath lessonFree9 CQ
Lifehack for the holidays: Use math to wrap oddly shaped gifts, pick a Secret Santa, and decorate your tree.
with Science FridayLifehack for the holidays: Use math to wrap oddly shaped gifts, pick a Secret Santa, and decorate your tree.

29 minFREEMath lessonFree15 CQ
Three mathematicians talk about the latest topics and their start in math.
with Science FridayThree mathematicians talk about the latest topics and their start in math.

6 minGeometry lesson4 CQ
Follow along to three examples that illustrate how to use previously proven theorems, assumptions, and properties in order to write a geometric proof.
with Math FortressFollow along to three examples that illustrate how to use previously proven theorems, assumptions, and properties in order to write a geometric proof.

17 minFREEPolitical Science lessonFree9 CQ
Supreme Court justices appear befuddled by math in gerrymandering case.
with Science FridaySupreme Court justices appear befuddled by math in gerrymandering case.

6 minGeometry lesson4 CQ
The math problem covered in this lesson appeared in an MIT admission test in the year 1869, and is a good test of geometry concepts. Give it a try!
with Sanjay NoronhaThe math problem covered in this lesson appeared in an MIT admission test in the year 1869, and is a good test of geometry concepts. Give it a try!

6 minGeometry lesson4 CQ
In this lesson, Math Fortress presents and proves two basic theorems in geometry, the right angles theorem and the straight angles theorem.
with Math FortressIn this lesson, Math Fortress presents and proves two basic theorems in geometry, the right angles theorem and the straight angles theorem.

9 minAlgebra lesson5 CQ
This lesson explains the basics of how to write twocolumn algebraic and geometric proofs. It also covers the elements of an axiomatic system. Let's dig in!
with Math FortressThis lesson explains the basics of how to write twocolumn algebraic and geometric proofs. It also covers the elements of an axiomatic system. Let's dig in!
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325 min3part Biology course14 CQ
Preparing for the AP Biology exam? In this threepart course, get clear explanations of Darwinian evolution by natural selection, modern evolutionary theory, and the history of life on Earth.
with Bleier BiologyPreparing for the AP Biology exam? In this threepart course, get clear explanations of Darwinian evolution by natural selection, modern evolutionary theory, and the history of life on Earth.

7107 min7part iOS Development course57 CQ
Looking for a programming language that can do some heavylifting but doesn't take years to master? When programming for iOS, OS X, and watchOS, Apple's programming language Swift is the best choice!
with Sanjay NoronhaLooking for a programming language that can do some heavylifting but doesn't take years to master? When programming for iOS, OS X, and watchOS, Apple's programming language Swift is the best choice!

11163 min11part iPhones + iPads course88 CQ
Want to get the most out of your iPhone? This course from tech expert Todd Olthoff is the perfect guide, for everything from basic installation to builtin app features.
with Todd OlthoffWant to get the most out of your iPhone? This course from tech expert Todd Olthoff is the perfect guide, for everything from basic installation to builtin app features.

41572 min41part Arduino course303 CQ
Want to build a new robot friend? How about create a cool LED sign? Whatever the gadget may be, get started with this beginnerfriendly Arduino course from Open Source Hardware!
Want to build a new robot friend? How about create a cool LED sign? Whatever the gadget may be, get started with this beginnerfriendly Arduino course from Open Source Hardware!

1270 min12part Science course41 CQ
If you're looking for fun activities for kids that are equal parts science and craft, you'll love this course with lessons covering everything from homemade oobleck to egghead gardens.
with Sophie's WorldIf you're looking for fun activities for kids that are equal parts science and craft, you'll love this course with lessons covering everything from homemade oobleck to egghead gardens.

40208 min40part Chemistry course125 CQ
Professor Dave covers the fundamentals of chemistry with short and simple lessons on using scientific notation, balancing chemical equations, understanding atomic theory, and more.
Professor Dave covers the fundamentals of chemistry with short and simple lessons on using scientific notation, balancing chemical equations, understanding atomic theory, and more.

971 min9part Chemistry course39 CQ
Explore the basic properties of gases and learn how gas molecules move, are measured, and react to changes in pressure, volume, and temperature with easytounderstand illustrations and examples.
Explore the basic properties of gases and learn how gas molecules move, are measured, and react to changes in pressure, volume, and temperature with easytounderstand illustrations and examples.

1172 min11part Chemistry course43 CQ
This course on nuclear chemistry and radioactive decay from Prof. Amanda Holton discusses the differences among alpha, beta, and gamma decay; nuclear fusion and fission; and nuclear kinetics.
with Amanda HoltonThis course on nuclear chemistry and radioactive decay from Prof. Amanda Holton discusses the differences among alpha, beta, and gamma decay; nuclear fusion and fission; and nuclear kinetics.

46342 min46part Chemistry course196 CQ
Organic chemistry can be complex and difficult to learn. Professor Dave makes learning organic chemistry easy with this comprehensive course that explains the basics in a structured and linear way!
Organic chemistry can be complex and difficult to learn. Professor Dave makes learning organic chemistry easy with this comprehensive course that explains the basics in a structured and linear way!

520 min5part Chemistry course13 CQ
Are you a chemistry student delving into quantum mechanics? In this course, review historical, mathematical, and conceptual topics of quantum mechanics, and experiments that led to key findings.
with Amanda HoltonAre you a chemistry student delving into quantum mechanics? In this course, review historical, mathematical, and conceptual topics of quantum mechanics, and experiments that led to key findings.